Buggy code:
public Object getManagedInstance ( ) { } public PersistenceCapable getPersistenceCapable ( ) { } public ClassMetaData getMetaData ( ) { } public OpenJPAStateManager getOwner ( ) { } public int getOwnerIndex ( ) { } public void setOwner ( Object oid ) { } public boolean isEmbedded ( ) { } public boolean isFlushed ( ) { } public boolean isFlushedDirty ( ) { } public BitSet getLoaded ( ) { } public BitSet getFlushed ( ) { } public BitSet getDirty ( ) { } public BitSet getUnloaded ( FetchConfiguration fetch ) { } private BitSet getUnloadedInternal ( FetchConfiguration fetch , int mode , BitSet exclude ) { } public StoreContext getContext ( ) { } BrokerImpl getBroker ( ) { } public Object getId ( ) { } public Object getObjectId ( ) { } public void setObjectId ( Object oid ) { } public StateManagerImpl getObjectIdOwner ( ) { } public boolean assignObjectId ( boolean flush ) { } boolean assignObjectId ( boolean flush , boolean preFlushing ) { } private void assertObjectIdAssigned ( boolean recache ) { } private boolean assignField ( int field , boolean preFlushing ) { } public Object getLock ( ) { } public void setLock ( Object lock ) { } public Object getVersion ( ) { } public void setVersion ( Object version ) { } Object getLoadVersion ( ) { } public void setNextVersion ( Object version ) { } private void assignVersionField ( Object version ) { } public PCState getPCState ( ) { } public synchronized Object getImplData ( ) { } public synchronized Object setImplData ( Object data , boolean cacheable ) { } public boolean isImplDataCacheable ( ) { } public Object getImplData ( int field ) { } public Object setImplData ( int field , Object data ) { } public synchronized boolean isImplDataCacheable ( int field ) { } public Object getIntermediate ( int field ) { } public void setIntermediate ( int field , Object data ) { } private synchronized Object getExtraFieldData ( int field , boolean isLoaded ) { } private synchronized Object setExtraFieldData ( int field , Object data , boolean loaded ) { } public Object fetch ( int field ) { } public Object fetchField ( int field , boolean transitions ) { } public void store ( int field , Object val ) { } public void storeField ( int field , Object val ) { } public void dirtyCheck ( ) { } private boolean needsDirtyCheck ( ) { } public Object fetchInitialField ( int field ) { } private static Object fetchField ( FieldManager fm , FieldMetaData fmd ) { } public void setRemote ( int field , Object value ) { } void beforeRead ( int field ) { } void beforeFlush ( int reason , OpCallbacks call ) { } void afterFlush ( int reason ) { } void commit ( ) { } void rollback ( ) { } void rollbackToSavepoint ( SavepointFieldManager savepoint ) { } void persist ( ) { } void delete ( ) { } void nontransactional ( ) { } void transactional ( ) { } void nonprovisional ( boolean logical , OpCallbacks call ) { } void release ( boolean unproxy ) { } void release ( boolean unproxy , boolean force ) { } void evict ( ) { } void gatherCascadeRefresh ( OpCallbacks call ) { } public boolean beforeRefresh ( boolean refreshAll ) { } void afterRefresh ( ) { } void setDereferencedDependent ( boolean deref , boolean notify ) { } void setDereferencedEmbedDependent ( boolean deref ) { } public boolean getDereferencedEmbedDependent ( ) { <START_BUG> return ( _flags |= StateManagerImpl . FLAG_EMBED_DEREF ) == 0 ? false : true ; <END_BUG> } void readLocked ( int readLockLevel , int writeLockLevel ) { } private int calculateLockLevel ( boolean active , boolean forWrite , FetchConfiguration fetch ) { } private void obtainLocks ( boolean active , boolean forWrite , int lockLevel , FetchConfiguration fetch , Object sdata ) { } private void releaseLocks ( ) { } public boolean serializing ( ) { } public boolean writeDetached ( ObjectOutput out ) throws IOException { } public void proxyDetachedDeserialized ( int idx ) { } public boolean isTransactional ( ) { } public boolean isPendingTransactional ( ) { } public boolean isProvisional ( ) { } public boolean isPersistent ( ) { } public boolean isNew ( ) { } public boolean isDeleted ( ) { } public boolean isDirty ( ) { } public boolean isDetached ( ) { } public Object getGenericContext ( ) { } public Object fetchObjectId ( ) { } private boolean hasGeneratedKey ( ) { } public Object getPCPrimaryKey ( Object oid , int field ) { } public byte replaceFlags ( ) { } public StateManager replaceStateManager ( StateManager sm ) { } public void accessingField ( int field ) { } protected void beforeAccessField ( int field ) { } public void dirty ( String field ) { } public void dirty ( int field ) { } private Boolean dirty ( int field , Boolean mutate , boolean loadFetchGroup ) { } private void postDirty ( Boolean status ) { } public void removed ( int field , Object removed , boolean key ) { } public Object newProxy ( int field ) { } public Object newFieldProxy ( int field ) { } public boolean isDefaultValue ( int field ) { } public void settingBooleanField ( PersistenceCapable pc , int field , boolean curVal , boolean newVal , int set ) { } public void settingByteField ( PersistenceCapable pc , int field , byte curVal , byte newVal , int set ) { } public void settingCharField ( PersistenceCapable pc , int field , char curVal , char newVal , int set ) { }

Fix:
return ( ( _flags ) & ( StateManagerImpl . FLAG_EMBED_DEREF ) ) == 0 ? false : true ;